内交联型水性聚氨酯的配方设计与计算

The design and calculation of the ingredient of networking polyurethane emulsion

由平均官能度 f-导出的平均聚合度控制方程 :f-n=1/ [1- Pa(f-/ 2 ) ],用途广、适应性强 ,不仅用于线形缩聚 ,而且可用于体形缩聚 ;将其用于交联型水性聚氨酯的配方设计与核算 ,简单、方便 ,非常值得推广。

By using the concept of average number of functional group f-,the controlling equation of number average degree of polymerization n=1/[1-P a(f[DD(]-/2)]is deduced.This equation can be used to control and calculate the ingredient of networking polyurethane emulsion. It could substitute the equation n=(1+r a)/(1+r a-2r aP a) and be used widely.